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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-01 21:08:03 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-01 21:08:03 -0700 |
commit | 994c0e992522c123298b4a91b72f5e67ba2d1123 (patch) | |
tree | 411952f844b8e1d5ef2854e44df793529078d3eb /arch/arm/mach-imx/src.c | |
parent | 367069f16e32e188d4687fe2c3e30f2ca583836f (diff) | |
parent | abc3f126ac736280c68db6472eb0040ddf6e1b1f (diff) | |
download | linux-rt-994c0e992522c123298b4a91b72f5e67ba2d1123.tar.gz |
Merge branch 'next/soc' of git://git.linaro.org/people/arnd/arm-soc
* 'next/soc' of git://git.linaro.org/people/arnd/arm-soc: (21 commits)
MAINTAINERS: add ARM/FREESCALE IMX6 entry
arm/imx: merge i.MX3 and i.MX6
arm/imx6q: add suspend/resume support
arm/imx6q: add device tree machine support
arm/imx6q: add smp and cpu hotplug support
arm/imx6q: add core drivers clock, gpc, mmdc and src
arm/imx: add gic_handle_irq function
arm/imx6q: add core definitions and low-level debug uart
arm/imx6q: add device tree source
ARM: highbank: add suspend support
ARM: highbank: Add cpu hotplug support
ARM: highbank: add SMP support
MAINTAINERS: add Calxeda Highbank ARM platform
ARM: add Highbank core platform support
ARM: highbank: add devicetree source
ARM: l2x0: add empty l2x0_of_init
picoxcell: add a definition of VMALLOC_END
picoxcell: remove custom ioremap implementation
picoxcell: add the DTS for the PC7302 board
picoxcell: add the DTS for pc3x2 and pc3x3 devices
...
Fix up trivial conflicts in arch/arm/Kconfig, and some more header file
conflicts in arch/arm/mach-omap2/board-generic.c (as per an ealier merge
by Arnd).
Diffstat (limited to 'arch/arm/mach-imx/src.c')
-rw-r--r-- | arch/arm/mach-imx/src.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/src.c b/arch/arm/mach-imx/src.c new file mode 100644 index 000000000000..36cacbd0dcc2 --- /dev/null +++ b/arch/arm/mach-imx/src.c @@ -0,0 +1,49 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. + * Copyright 2011 Linaro Ltd. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/init.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <asm/unified.h> + +#define SRC_SCR 0x000 +#define SRC_GPR1 0x020 +#define BP_SRC_SCR_CORE1_RST 14 +#define BP_SRC_SCR_CORE1_ENABLE 22 + +static void __iomem *src_base; + +void imx_enable_cpu(int cpu, bool enable) +{ + u32 mask, val; + + mask = 1 << (BP_SRC_SCR_CORE1_ENABLE + cpu - 1); + val = readl_relaxed(src_base + SRC_SCR); + val = enable ? val | mask : val & ~mask; + writel_relaxed(val, src_base + SRC_SCR); +} + +void imx_set_cpu_jump(int cpu, void *jump_addr) +{ + writel_relaxed(BSYM(virt_to_phys(jump_addr)), + src_base + SRC_GPR1 + cpu * 8); +} + +void __init imx_src_init(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-src"); + src_base = of_iomap(np, 0); + WARN_ON(!src_base); +} |